Oil clarifier and filter



Jan. 11, 1938, s. w. BRIGGS OIL CLARIFIER AND FILTER Filed July 27, 1935 5 Sheets-Sheet 1 dftouwu Jan. 11, 1938. s. w. BRIGGS OIL CLARIFIER AND FILTER s sheetssneet 2 Filed July 27, 1933 vll/1114 '11, .1938. s, w BRIGGS v 2,105,136

' oIL -CLARIFIER AND FILTER Fileduly 27, 1935 5 sheets-sheet s v Jan. 1l, 1938. v i

Filed July 27, 1953 Y S. W. BRIGGS OIL'CLARIFIER AND FILTER f 5 sheets-sheet 4 ,6I (e @3143 l I ,Wm hun:

Jan. Il, 1938.

s. w. BRlGGs 2,105,136

OIL CLARIFIER' AND FILTER Filed July 27, 1933 .5 'SheetsfSheet 5 v J7 L M a@ 1 E H; /35' Je gang gmc/Mw 1o a rapid rate.

' partially pass through Patented Jan. 11,' 1938l 4,UNITED STATES PATENT OFFICE- i i v om omlnm mman Y 12 Claims.

The present invention relates tooil'clarifiers and filters, and has for anobject to provide a. compact device of the pressure filter type which 1 utilizes oilfrom the pressure line of an internal combustion engine crank case` for the operation of the lter or clarifier.

Another object of the jacket through which may be circulated a certain desired proportion of the oil in circuit for maintaining the filter at an even temperaturekeep ing the fullers earth or other ltering vmaterial used from being chilled, admitting Adissipation of `excessive'heat and for partly relieving and stabilizingthe pressure of the oil fed through the The-invention also aims to provide a jacketed container withn a divided -circuit of oil under pressure adapted t0. pass and the filtering materia ytherein and to also the jacket, various Vrelief i valves and pressure reducing fittings being employed for maintainingthe desired pressures at Y the vdifferent pointsrequired 'for proper. distribution of the voil under pressure and to Avent` portions orI the circuit when excessive .pressureisv built up.

The inventionlalsor aims at thevk provision of certain .improvedtdetail constructions of the containrgflter head and screen mountings associated therewith for accomplishing the various l purposes f the invention.

mthat new oil placed in the crank case of an in-' viscosity `for a short remains inl the oil It is well known to those skilled in the art 'vernal combustion engine maintains its original period of time only owing to in the engine a certain peracid is formed. If this acid for any appreciable length of time it causes the breaking down o! the oil at The present invention is adapted to be continuously in circuit with the oil system the fact that in use centage of organic and to remove' the organic acid and other ac- .cumulations and foreign' deposits from the oil s to such 'a percentage as to preventthe accumulation vbecoming suilcient to break down the oil.

With the foregoing and otherv objects in view,

f the invention will be more fully described herematter, and will. be

1- several views,

y clarifier embodying out in the claims appended hereto.

vIn the .,drawings, wherein like symbolsrefer to like o-r corresponding parts throughout the elevation of an oil'lter or the features of. the present Figure 1 isv a n side present invention is to provide an oil filter of this `character with a' thereto.

through the container insuring the4 Vwhich has an outerv more particularly pointed invention, portions of a crank case being shown l iragmentarily. y

Figure 2 is a side elevation o1.' the same, a dash board or other suitable support being shown in section. 1 y

Figure 3 is a top plan View of the container. Figure 4 is an-enlarged vertical section taken through the containerand the partsv adjacent Figure 5 is a detail longitudinal sectional view taken throughv the inner receptacle or portion of the containerand showing thescreens applied.v thereto. 1f

Figure 6 is a transverse section taken through the upper end of the container on the line v644i of Figure 4 looking down on the `filter head.

Figure '1 is a transverse section taken through l the upper vend of the inner receptacle suhstanf tially on the line 1--1 of. Figure 5..

Figure 8 is a transverse section taken through the intermediate portion of the container on the Y. line of Figure 4, showing the bottom rllter screen in place.

Figure 9 is a fragmentary enlarged sectional view taken through the upper edge portion `of the container and iilter head, showing the takeofi connection for the oil passing upwardly through the ltering material.

Figure 10 is a side elevation of a slightly modied form of the apparatus wherein a vacuum 30 tank is included in the return pipe to assist in circulating the oil.

Figure 1l is a vertical section taken through a modlned construction of container, showing a. spring Suspension means for the inner receptacle.

Figure' 12 is a vertical section-taken through another modiiled form of container, and

Figure 13 lis a sectional perspective view of one of the screens employed, with the parts separated and ready for assembly. l

Referring now to the drawings,` andfirst to Figures l to 9, the filter comprises a container jacket 2liA provided with a closed bottom 2l which may be integral with the jacket' and provided at its upper end with an outturned annular ange 22. Disposed concen-v trically and in spaced relation within the jacket is a receptacle 23 preferably constructedof metal and whichhas a. closed bottom 24 and which is provided with outwardly Pressed bosses or 50 projections 25 symmetrically disposed about the` receptacle 23 -for engaging the inner wall of the jacket `2li and maintaining the receptacle in uniformly spaced relation therefrom'. The receptacle I3 is provided with an outturned annular ange 55 26 at its upper end by means of which the receptacle 23 may be suspended within the jacket 20 and with the bottom 24 of the receptacle in spaced relation to the bottom 2| of the jacket. As shown in Figure 4, a packing or washer 21 is interposed between the flanges 22 and 26 of the jacket and the receptacle so as to seal the space between the jacket and the receptacle at the upper end of the container.

The receptacle 23 is adapted to carry a body of filtering material 28 which may bel fuller's earth and which is preferably placed in the container in accordance with my Patent No. 1,860,- 229, granted May 24, 1932, and wherein the outer coating of the filtering material is secured -byl shellac or other suitable adhesive against the inner wall of the receptacle 23 to prevent seepage of oil under pressure upwardly between the body of filtering material 28 and. the wall of the receptacle 23. The bottom of the receptacle 23 is provided with a central opening which is closed by -a lterlng screen upwardly throughwhich oil under pressure is adapted to pass as shown to advantage in Figure 13, this iltering screen may comprise a ring 29 arranged to fit through the opening in the bottom 24 of the receptacle, and which is provided with a lower flange or shoulder 3l against which is seated a wire mesh screen 3| of desired size and which is braced and supported by an overlying disc 32 having a plurality of apertures 33 therein for insuring the proper distribution of the oil passing through the screens. As shown in Figure 5 particularly, the wire mesh '3| rests upon the shoulder or liange 33 and the dise32 is iltted intoA the ring 23 over the wire mesh 3|, and the upper portion of the ring is then crimped and rolled to provide a double ange 34 adapted not only to secure the screen and the disc together but to also engage about the marginal edge of thebottom 24 for holding the screen in place.

The 'upper end of the receptacle 23 is closed by a wire screen 35 of suitable mesh and which is soldered or otherwise suitably secured to a rim 36 which is -iltted intothe upper end of the receptacle 23 for holding vthe illteringgmaterlal 28v in the receptacle.

A lter head, shown to advantage in. Figures 4 and 6, is placed upon the upper end of the re ceptacle 23 and is supported across thereceptacle by the outturned iianges 22 of the jacket 20. 'I'his head comprises a disc 31 havingan outer diameter corresponding to' that of the flanges 22 and 26 and which is provided with a desired number of apertures therethrough,l four being shown in the present' instance, preferably arranged in symmetrical order near the central portion ofthe head. Each opening of the disc 31 is closed by a reinforced screen 36- constructed in accordance with the showing in Figures 5 and 13, and wherein the double flanges- 34 are over-` turned about the' marginal edges of the opening in the disc or head 31.

A dome or cover plate 39 is itted` over the rllter head 31 and has an l substantially to that of the flanges' 22 and 26,

and which is arched or domed upwardly at its l shown in Figure 9.

The dome 39, the filter head 31'and the anges 22 and 26 are all clamped together in superposedr.

l'dome into the openings 42. is secured in the flange 22 of the jacket in regouter diameter equal` relation by a circular series or row of bolts 40 having the usual nuts thereon for drawing the bolts tight about the head of the illter and sealing all of the parts together. The illter disc or head 31 may be provided with packing washers 4| at opposite sides thereof and at the peripheral or outer edge portion of the head as shown to advantage in Figure 4.

At one side of the container, as shown in Figune 9, the various parts associated with the head 31 are providedK with registering openings 42 and the dome 39 is provided in registry with the openings 42 with a radial groove or recess 43 in its under side through which oil may pass from the A pipe coupling 44 istry with the openings 42 so that oil may pass outwardly through the openings 42 and through the pipe coupling 44 from the dome.

As shown in Figure 1, the device is adapted for use in connection with the crank case 45 of an internal combustion engine or the -lik'e and from the crank case rises a pressure pipe 46 which leads from the oil pump of the crank case and which is'provided with a pressure gauge 4 1 to indicate the pressure of the oil from the pump.

This pipe 46 is provided with a T-coupling 48 carrying a feed pipe 49 which leads to the filter. The feed pipe 49 is provided .with a reducing tting 53 having a drill hole of No. 50 drill hole Y or thereabout to control the volume of the oil passing to the lter. The pipe 49 may also be provided with a exible hose section 5| therein for absorbing vibrations between the parts connected to the crank case 45 and the container ot the upper end of the relief valve 54 as shown.A

The relief pipe 55 is preferably carried aroundto the side of the container and thereat is connected into one branch of a four-way coupling 56. 'I'he upper branch of the coupling 56 is connected by a pipe 51 through the wall of the jacket 20 near the top thereof, as shown in Figure 4. and at a point diametrically opposite to the entrance spud 53 near the lower :end of the jacket. The pipe- 51 is provided with a reducer 58 having a drill hole therein of approximately No. 60 drill lhole so as to check the out-now of the oil from the jacket of the container.

The other horizontal branch of the four-way coupling 66 is connected by a pipe 59 to the outlet coupling 44 which leads from the dome of the container so that oil inthe dome may pass directly to the four-'way coupling 56. 'I'he lower branch of the four-way coupling 56 is connected by a pipe 63 with a flexible section 6| therein, to the return portion of the crank case 45.

The containermay be provided, in the bottom of the jacket 29, with a drain 'plug 62 or the like for removing water, sediment and the like which may be extractedby gravity from the oil.

The container may be mounted upon any suitable relatively solid support. such as the dash board l63 of a'motor vehicle by means of bracket bands or straps adapted to encircle the container about the jacket 2li, and which may be provided with'rbolts or any other, suitable devices Lio for securely holding the container at the desired height.

`As shown in Figure 6, the several parts comprising the head of the container or filter are guided into and maintained in register by means of a pilot pin 55 which may be securedl to the out-turned ange 22 of the jacket 2|) for receiving thereover the suitable` apertured ilanges, discs, washers and the like of whichthe head is composed. It is important to properly register these parts so that the openings 42 which are formed in these parts will be brought into proper lregister with the outlet pipe coupling 44.

In the Amodilication shown in Figure l10, the return-pipe lilla instead of going directly `to the crank case 45, is connected to an intakev portion at the upper end of a vacuum tank 66. The tank 65 is connected by a pipe 61 to the intake manifold ofv an engine for operating the tank 6B in the usual manner. The oil released from the tank 66 may then be returned through the pipe 68 to the 'crank' case 45. The vacuum tank E5 thus aids in the feeding or vdischarge ofthe oil through and from the lter.`

In the modification shown in Figure l1, the

inner receptacle` 69 is provided not lonly with the lower spacing bosses or projections 25, but also withupper bosses or projections m adapted to center the upper end of the receptacle GQ vin the jacket. 20. The receptacle 69 has no outtu'rned ange at its upper end and seats directly against the lower side of apacking washer 1l, which extends inwardly from the marginal edge of the -head to anappreciable extent for overlapping the upper end of the receptacle 69. The receptacle 69 is yieldingly; held upwardly against the washer 1I by means ci' a coil spring 12 or the like mounted linthe bottom 2l of the jacket and Which is of suflicient diameter to lie about the bottom screen 3| of the receptacle.

In the modification shown in' Figure 1-2, the jacket 201is provided in spaced relation to its bottom 2l with inwardly extending cleats, bosses in place at its upper end by. means'l of a down- 4 wardly flanged packing washer clamped between the flanges of the head and engaging the exterior surface of the receptacle 14, as shown In the operation of the lter, oil under presvsure passes from the pressure pump pipe 46,l

s wardly into the bottom of the jacket 20, and also upwardly against the opposite sides of the jacket 'and all yabout the inner receptacle 23. The oil which passes through the Aannular compartment or space'between the jacket and the receptacle, .'iirst serves to heat thecontainer and the filtering material'therein. This oil also serves when in the jacket tc dissipate excessive heat andto maintain more constant the desired tempera# ture within 'thelten The oil passes out of the upper end of the jacket 2li through the pipe 51 l and back to the return coupling 56.

This out-now of oil is retarded to some extent by the reduction coupling 58 so as to exert a desired pressure on theoil for passage upwardly through the filtering material g8. 'I'he oil in the bottom of the jacket 2U passes upwardly through the bottom screen 3| through the body of ltering material 28 and thence upwardly7 through the top screen 35 of the receptacle and through the variously spaced apart and arranged top or head screens 38. The oil now enters the dome39 and is delivered therefrom through the channel or groove 43, through the openings 42 and outwardly through the pipe coupling 44, pipe 59 and to the return coupling 56. The oil passes back to the crankcase through the pipe 60 and this oil circuit is maintained during the operation of the engine sothat the oilis continuously relieved lof its organic acid and preserved indefinitely from cracking. The oil is also maintained at a desired working temperature and is protected against excessive heat.

The lter may be readilyv cleansed and the materiaLZB may be readily interchanged by merely opening the headfof the iilter` and interchanging the receptacle 23 therein Without disturbing the other parts of the apparatus.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modincations being restricted only by the scope of the following claims:-

1. In a pressure lter, a container 'having a jacket thereabout and opening at one end into the jacket, a liquid pressure feed pipe opening into the jacket 4to feed liquid under pressure through the jacket to regulate the temperature oi. the container and through the container, av ltering body in the container to filter the liquid passing therethrough, a return pipe connected to the jacket to carry oil the liquid passing therethrough, a reducer in the return pipe for checking the passage of liquid through the jacket and p increasing the pressure .of the liquid therein to force a desired proportion of the liquid through the container, and a second return pipe leading from the other end of the container'to take off the filtered liquid.

2. In a. pressure filter, a jacket open at its top, a ltering container projecting down into the jacket and sealed thereagainst at lts upper end,

a screen disposed in the bottom of the container and opening the latter into the bottom of` the jacket, a top screen structure disposed against the upper end of the container, a dome over the screen structure, liquid pressure means connected to the lower portion of the jacket, a return pipe having a branch opening into the upper portion of the jacket and having another branch opening into the dome, and back pressure meansiin the first branch to insure passage of a proportion of the liquid through the filtering container.

3. In 'a pressure filter, a supporting wall, a'.

-4 ring 4iittecl through the wall and having a substantially S-shape cross section having an outturned ange at one end embracing the marginal edge of the supporting wall and having an inturned ange at its other end providing an anlying the screen.

4. In a pressure filter, a screen carrying ring having an intermediate ledge portion with oppositely overturned flanges providing an outwardly facing groove at one end for receiving a4 ring support therein and an inwardly passing groove at its other end, a screen disc seated in the inwardly facing groove, and a perforated supporting disc also seated in the inwardly lfacing groove over the screen for strengthening the same and spreading the liquid passing through the screen.

5. In a pressure filter, a filtering container, liquid pressure means for forcing liquid into one end of the container, a plate secured over the other end of the container and having spaced openings therethrough, a dome on the plate to receive and carry off the filtered liquid, a ring e fitted through each opening of the plate and having each a flange at one end overturned on the plate to hold the ring thereto, each ring also having an inturned ange at its other end providing an inwardly facing annular groove, screen discs fitting in the grooves of the rings, and

liquid dispersing perforated discs overlying the screen discs and also seated in the grooves of the rings.

- 6. In a pressure filter, a jacket open at its top and having an out-turned flange thereat, a filtering container tted downwardly in the jacket and having'an out-turned flange overlying the jacket' flange, a filter plate extending over the container and having a marginal edge portion overlying the container flange, a dome extending over the filter plate to receive liquid passing upwardly through the plate, said dome having a marginal flange overlying the marginal edge portion of the plate, liquid pressure means opening into the lower end of the container for supplying liquid thereto, and a return pipe connected to the jacket flange at the side of the jacket, said jacket and container anges and said marginal edgeportion of the plate having registering liquid return openings therethrough y and said dome flange having a slot in its under side leading from the interior of the dome to said openings for conducting liquid from the dome to said return pipe..

7. In a pressure filter, a jacket, t filter con'` tainer spaced within the jacket and having centering means near its lower end and sealing means between the container and jacket at its upper end, a liquid pressure pipe opening into the lower end of the jacket, a reducer in said pipe for controlling the flow of liquid to the jacket, a return pipe leading from the upper end of the jacket for circulating liquid through the jacket, a back pressure device in the pipe for directing a portion of the liquid upwardly through the container, a dome enclosing the top of the container to receive liquid therefrom, an outlet branch pipe between the dome and the return pipe beyond the back pressure device for circulating a proportion of the liquid through thel container, and a pressure relief by-pass between said liquid pressure pipe and said return pipe beyond the back pressure device.

8. In a filter, a casing, means for feeding a l inlet-portion open to said fluid feeding means and an outlet' portion open only to said second outlet for filtering the fluid passing through the filtering element between said inlet and outlet, said ltering element having imperforate side portions of less dimensions than that of the casing to admit passage of a portion of the fluid to be filtered from said fluid feeding means about the filtering element and out through said restricted outlet for heating the filtering element to and maintaining the same at substantially the temperature of the fluid being treated.

9. In a filter, a casing having a flanged open top and a removable dome cover therefor, pressure feeding means for fluid to be filtered connected to the lower portion of the casing, a fluid outlet opening into the dome cover of the casing to carry off filtered fluid, a second fluid outlet opening into the casing below the flange, and a filtering element having a flange on its upper e'nd removably sealed between the casing flange and the cover for suspending the filtering element in the casing, said filtering element having an imperforate side -wall and an inlet opening in its bottom and an outlet opening in its top, whereby fluid under pressure from the bottom of the casing may enter the bottom of the ltering element and pass therethrough to the dome and the first outlet and a portion of the fluid in the casing may circulate around the filtering element and through lthe second outlet for 'maintaining the filtering 10. In a pressure filter, a casing, afiltering'element removably mounted in the casing and beingl of less diameter than the interior of the casing to provide a jacket about. the filtering element, said filtering element having bottom and top openings therein, fluid feeding means for feeding uid under pressure into the lower part of the casing for passage through the filtering element and through the jacket for maintaining the filtering element at substantially the temperature of the fluid and for filtering a portion of the fluid, outlet means in the side of the casing for passage of fluid from the jacket, a second outlet means connected to the upper part of the casing and opening above the filtering element, and a removable dome cover for the casing to close in the top of the filtering element and open to said second able dome supported on the casing flange and opening-into the second outlet means, and a removable filtering element having a flange at its upper end sealed between the casing flange and the dome, said filtering element having perforate lower and upper end portions for receiving fluid under pressure from the lower end portion of the casing and delivering filtered fluid to the dome and the second outlet carried by the casing flange,

said filtering element also having an imperiloratev side wall for contact with a portion of the fluid passing' to the first outlet means of the casing to maintain-the filtering element at substantially the temperature of the fluid.

12. In a pressure filter, a casing having an outturned flange at its' open top, a'flltering element removably disposed in the casing and having an outturned ange supported and sealed upon the cuslng ange, uid feeding means connected to the lower portion of the casing to feedv fluid under pressure to the filtering element; in the casing', a removable dome cover overlapping the anges and closing the casing and the upper end of the removable filtering element. and an outlet device carried solely by the casing :llange and opening upwardly into the dome cover for carrying of! ltered uld collected in ythe dome cover.

soU'rHwrcx' w. smoes. 

